Mars B. Howard
Full Stack Software Engineer · Saint Louis, MO
marsbhoward@icloud.com(314) 313-6452
Experience
Founder & Lead Engineer · Donada
Apr 2026 — Present- Built and maintain a Cardano-based NFT platform end to end — smart contracts, frontend, and infrastructure — as the sole engineer.
- Designed a rental contract system letting NFT holders earn yield while renters and community wallets gain eligibility for scheduled, automatically-paid on-chain prize draws.
- Shipped an on-demand NFT minting platform backed by an Aiken Plutus V3 minting policy with on-chain price enforcement.
Software Engineer in Test · Mastercard
Dec 2022 — Apr 2026- Designed and maintained Splunk and Dynatrace monitoring infrastructure to improve production visibility.
- Developed and enhanced automated regression suites using Rest Assured, reducing manual testing effort.
- Performed functional and integration testing in distributed systems environments.
- Collaborated with engineering and operations teams to troubleshoot production incidents.
- Contributed to CI/CD quality gates for release validation.
Network Operations Analyst · Mastercard
Nov 2021 — Dec 2022- Provided technical analysis and support to eighteen customer-impacting applications.
- Retrieved database information via SQL and accessed remote servers via SSH and Unix commands.
- Created automation processes utilizing Python and Selenium.
Vehicle Service Technician · Enterprise Holdings
Oct 2015 — Nov 2021- Analyzed an average of one hundred vehicles per week for damage, inoperative equipment, and safety hazards.
- Communicated with partnering shops to move vehicles in and out of the database, raising customer service score to 90/100.
Education
Full Stack Developer Program · Flatiron School
Jan — Jun 2020CS50x · Launch Code
2016Computer Information Systems · Lincoln University
2009 — 2014Skills
JavaScriptTypeScriptReactReduxRuby on RailsJavaPythonRest AssuredSeleniumPostmanInsomniaSplunkDynatracePostgreSQLSQLiteGitHerokuLinux/UnixSSH